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†Ptilotrypina Astrova 1965
urn:lsid:organismnames.com:name:2490669
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†Ptilotrypina Astrova 1965
Astrova 1965. The morphology, evolutionary history and arrangement of the Ordovician and Silurian Bryozoa. Trudy Paleontologicheskogo Instituta, 106 1965: 1-432